Automatic swinging gate



(ModeL) 2 Sheets-Sheet 1.

A. BOONE.

I Automatic Swinging Gate.

No. 242,503. Patented June 7,1881.

(ModeL) 2 Shets-Sheet 2. A. BOONE.

" Automatic Swinging Gate. No. 242,503. Patented June 7, 1881.

NlTED STATES PATENT OFFrcE.

ALONZO BOONE, OF JAMTON, OHIO.

AUTOMATIC SWINGING GATE.

SPECIFICATION forming part of Letters Patent No. 242,503, dated June '7, 1881.

Application filed April 21, 1881.

To all whom it may concern Be it known that I, ALONZO BooNE, M. D., of Jamton, in the county of Montgomery and State of Ohio, have invented certain new and useful IlIlpIOVGmtllilS in Automatic Swinging Gates, (which I denominate Dr. A. Boones Excelsior Automatic Gate and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make'and use the same, reference being had to the accompanying drawing's,which form a part of this specification.

Figure 1 is a top view of my improved gate. Fig. 2 is a side view. Fig. 3 is an end view. Fig. 4 is a vertical sectional view through the gate and gate-posts. Fig. 5 is a detail view of the tripping mechanism, and Fig.6 is a dctail view of the latch.

Corresponding parts in the several figures are denoted by like letters of reference.

This invention relates to automatic swinging gates; and it consists in certain improvements in the construction of the same, which will be hereinafter fully described, and particularly pointed out in the claim.

In the drawings hereto annexed, A repre sents the gate, which may be of any suitable construction, an ordinary panel gate being shown in the drawings hereto annexed.

B is the gate-post, which is provided near its lower end with a bracket, 0, having a suitably-constructed socket, D, to receive a ball, E, formed upon a bracket, F, near the lower end of one end of the gate, the ball-and-socket joint or universal joint thus formed constituting the lower gate-hinge.

The upper end of the gate-post B is provided with a stud, G, upon which is pivoted a horizontal lever, H, one end of which is provided with an opening, I, to receive a pin, J, projecting upward from the end of the gate. The upper gate-hinge is thus formed.

K K are vertical posts erected at some distance from the gate, on either side thereof, and provided upon their rear sides with bails or brackets L, to receive and guide the rods M, the upper ends of which are hooked or otherwise loosely attached or pivoted to the rear (Model) end or arm of lever H. The lower or outer ends of the rods M are connected, by cords or chains N, to the peripheries of pulleys 0, secured firmly upon the shafts or axles of the trip-levers. The latter consist simplyof crankshafts P, or shafts provided, as shown, with U-shaped cranks or bails, said shafts being mounted or journaled in suitable brackets or bearings, Q, at some elevation from the ground. This latter feature is one of considerable importance, inasmuch as by this arrangement the crank, when depressed, will describe an angle of about eighty degrees, whereas when the shaft is journaled close to the ground the angle described is only forty-five degrees, thus rendering the operation of the parts operated by the tripping mechanism less certain and satisfactory.

In order to maintain the crank-shafts (or trip-levers) in an upright position I provide the ends of said shafts with triangular or segmental weights R, secured firmly to said shafts, as shown, in such a manner as to exercise the power of the entire weight, or nearly so, upon the shaft.

The posts KK are provided upon their front sides with forked brackets S, having gravitylatches T, which consist of pivoted metallic plates, which may be in the shape of rightangled triangles, as shown, pivoted near their upper corners, so as to present a beveled outer edge; or they may consist simply of rectangular plates having beveled top edges. Similar latches, U, are pivoted upon the inner side of the latch-post V. The gate A is provided with a projecting pin, W, to engage the said latches.

The operation of my invention is as follows: When a wagon-wheel strikes the trip-lever at one side of the gate the chain N is wound upon pulley 0, thus operating the connectingrod M, and through it the lever H, by which the upper corner of the gate is tilted in a lateral and rearward direction until released from the latches U, when its own weight will cause it to swing open and engage the latch T of post K on the opposite side of the gate. The vehicle may now pass and operate the tripping mechanism on the other side of the gate, which is then in a similar manner tilted and disengaged from the latch T, when it will swing back to its original closed position.

Having thus described my invention,I claim and desire to secure by Letters Patent of the 5 United States- The combination, with the gate A, having bracket F, provided with ball E and pin J, of the post B, having bracket 0, provided with socket D, and lever B, having opening I, and

suitable operating mechanism, as herein delo scribed for the purpose set forth.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in presence of two witnesses.

ALONZO BOONE, M. I).

\Vitnesses GEO. W. G001), CHRISTIAN STEUKHART. 

